How can I edit/export the HDR in 32-Bit in Photoshop? All options I found would reduce the bit depth to 16 bits/component. Even when I open the 32-Bit half float HDR DNG created by Lightroom in Adobe Camera RAW i cannot find a way to move forward with 32 bits/component. Is there any workaround for this?

The Lightroom team is actively investigating and working on fixing this intermittent issue of UI panels becoming Black, and we are close to finding a solution for it, however, it is not yet in the most current update (6.9/CC2015.9). We are hoping to have it fixed in next update.

If you add your me-too vote to the bug report in the official Adobe feedback forum and follow that topic, you'll get notified whenever the status changes. (This forum is primarily a user-to-user forum.)

After you have opened the HDR image in Photoshop you can go to the Image->Mode menu option and choose 32-bit. However, you will discover that you have a very limited choice of tools to use in that mode. It's probably best to do as much of your editing in Camera Raw before opening the image in Photoshop..

How can I edit/export the HDR in 32-Bit in Photoshop? All options I found would reduce the bit depth to 16 bits/component. Even when I open the 32-Bit half floatHDR DNG created by Lightroomin Adobe Camera RAW i cannot find a way to move forward with 32 bits/component. Is there any workaround for this?

I understood that the DNG half float format is used to store the HDR data in a compressed form which still delivers ~30 f/stops but less color precision. But when I do edit/export process asked in the original thread, it uses true 16-Bit (not 32-Bit half float), which means 16 f/stops.